Joseph berger



J. BERGER, im

SEWING MACHINE` APPucATioN man :uw 2c, :915.

Patentd Oct. 19, 1920.

r y SSREET l A10"? fen (al i (fi/A3672# Hfylqif J7".

MLLML l. BERGER, Jn.

SEWING MACHINE.

APPLICATION FILED )ULY 20. 1915 Patented Oct. 19, 1920.

l0 SHEETS-SHEET 2 L BERGER, JR. SEWNG MACHXNE. APPglcAloN man1uLY2o.1915.

1,356,334. 'Patented Oct. 19, 1920.

l0 SHEETS-'SHEET 3 J. BERGER, Je. SEWlNG MACHINE. APPLscATloN man1uLv2o.l915.

1,356,334. Patented Oct. 19, 1920.

l0 SHEETS-SHEET 4.

1. BERGER, 1R. SEWING MAcHlNE.

APPUCATIUN YILED JULY 20. 1915.

l,856,334, Patented Oct. 19, 1920.

Jij/96. U5 155 J. BERGER, Je* SEWWG MACHENE. APPLICAUQN mw www, ma.

1,356,334. Patented Oct. 19, 1920.

OISHEETSMSHEET J. BERGER, 1n.

SEWING MACHINE.

APPLICATION r\|.ED1uLv2o.19|5.

1,356,334. Patented Oct. 19, 1920.

I0 SHEETS-SHEET l'.

AJ. BERGER, JR.

SEWiNG MACHINE.

APPUCATIGN mio 1uu2o.|915.

1,356,334. Patnted Oct. 19, 1920.

l() SHEETS-SHEET H.

J. BERGER, Jn. SEWING MACHINE. APPLICATION FxLEn1uLv2o.1915.

Patented Oot. 19, 1920.

)D SHEETS-SHEET 9.

J. BERGER, JR. SEWING MACHINE. "APPLxcATxnN nLEo1uLY2o,1915.

1,356,334, Patented Oct. 19, 1920.

' 'M' 1o SHEETS-sneu zo.

' 'UNITED STATES PATENT optics- JOSEPH BERGER, JB., F UTICAfNEW YORK,ASSIGNOR T0 UNION SPECIAL MACHINE COMPANY, 0F CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

SEWING-MACHINF of whichthe following is adescription, reference beinghad tofthe accompanying drawing and to the figures 0i reference markedthereon. 1 l

The invention relates to new and useful improvements in sewing machinesand more particularly to a sewing machine adapted to make a flat scamfor covering or Joining the edges of fabric,` f

An object of the invention is to provide a sewing machine' of the abovecharacter having a standard and an overhangin' arm supportingthe needlesand cross stitc ing mechanism, with a supporting arm which is carried bythe standard and which projects outwardly and upwardly from the standardand carries a depending portion which supports at its'lower end the worksupporting arm proper, whereby, small tubular articles may be formedabout said Work sup porting arm :md fed ofi' from the end thereof lasthey are stitched.-

A further object of the. invention is to provide a sewing machine' forformino' a lint scam with stitchi'ng'mechanism whic com prises in effecttwo independent sets of stitching mechanism, 'one operating in the rearof theother, and so Varranged that each forms parallel rows of connectedneedle. loops, the needle loo s and connected threads formed .by one'ing mechanism overlying in part or in wholethe needle 4`loops andconnecting threads' formed by the other stitch forming mechanism. I

A further object sans .invasion ig to 'provide means for guiding theedges `oftwn sections of a fabric to be joined or covered, so that theedges 'of said sections moet substantially midway between the outerneedles of the stitch forming mechanisms. t

A still further object of the invention is to provide means for,trimming the edges of [two sections of a'fabric to be joined prior tothe lioinng or covering of the rsame by the stitching mechanism. l

A still further object of the invention is to provide a stitching'mechanism of the above character which consists of two setsof i spacedneedles, one set being arranged and Spcicaticn of Letters Patent.

Application tiled July 20, 1915.

Patented Oct. 19, 1920.

Serial No. 40.895.

operating in the renr of the other'n'ith se )arate romplcmentnl stitchforming mec anism for cach set oi needles.

A still further object of the invention is to provide ai stitchingmechanism of the above character with separate thread la ing'devicesabove the fabric for euch set o needles.

These and other objects will in part be obvious and will -in part b'ehereinafter more fully disclosed. y

In the drawings which show by way of illustration one embodiment of theinvention,-

Figure l is a plan view of a sewing machine embodying my improvements;

Fig. 1a is a plan view of one of the cover plates,"

Fig. Qis a rcar elevation of the machine;

Fig. 3 is an end elevation of the same;

F ig. 4 is a sectional view on the line 4 4 of Fig. l;

Fig. 5 is a vertical longitudinal sectional view of' the` worksupporting arm and the de )ending arm which supports the same;

ig. G is n horizontal sectional View through a portion of the worksupporting arm. the throat plate being shown in plan;

Fig. 7 is a sectional view on the line 7-7 of Fig. 5;

Fig. 8 is a sectional view on the line 8--8 of Fig.V 5;

Fig. 9 is a sectional View on the line 9--9 of F ig. 5;

Fig. 10 is asectional view on the line- 10-10 of Fig. 9;

Fi 11 is a sectional view on the line Il 1 of Fig. 6;

Fig. 12 is s, detail of the lo er end of the depending arm, showing thecans for adjusting the 'stroke of the diierential feed igfil is adetailI partly in section and partly in plano an enlarged scale, showingthe endA of th worksupporting arm, the

`presser foot, tire needles, the thread laying.

devices copefating with the needles and a portion ci??? mcheni gioroperating, the

give access to ttd lines the strip` 417, but showing the thread layinghooks when brought into engagement with 4 the cross threads;

Fig. 19 is a View similar to Fig. 18, but showing the thread layin ho ksmoved to a position where the neet les pass between the strands of theloops car edby the respective hooks;

Fig. 2O is a detail in pers ctive showing the auxiliary feed dog and itssupporting bar;

Fig. 21 is a detail in perspective showing the main feed dog and thesupporting bar therefor;

Fig. 22 is a sectional view on the line 22-22 of Fig. 20;

` Fig. 23 a detail in perspective showing the end ofthe looper shaft andalso showing one o the looper carriers detached;

Fig. 24 is adetail partly in section showing the needle bar and themanner of supporting the needles. said View being trom in front of theneedlebar;

Fig. 25 is a detail showing the needle bar and the needle supportedthereby as viewed from the left in Fig. 24:

Fig. 26 is a similar View from the 'rear of the needle bar;

Fig.`27 is a View of the needle bar and needles from the right, asviewed in Fig. 24;

Fig. 28 is a sectional view on the line 28-28 of Fig. 27;

Fig. 29 is a plan view ofgthe needle clamp7 the needle bar being insection;

Fig. 30 is a top plan View of the presser foot;

Fig. 31 is a sectional View on 31--31 of Fig. 30;

Fig. 32 is a detail view partly in vertical the line section, showingthemanner of attaching the trimmer arm to its operating yoke;

Fig. 33 is a detail 4partly in front elevation and partly in'yerticalsection; showingV a modified form of stitch forming mechanism; f 1

Fig. 34 is a plan View, more or less di'agrammatically showing theloopers and the loop retainer whichcoperates with one of the loopers;

Fig. 35 is a planV View of a'lthroat late used in connectionwith Vthismodified crm of stitch formingmechanisin;

- dies.

Fig. 36 is a front elevation of the needle clamp and needles;

Fig. 37 is a bottom plan View; and Fig. 38 is a top plan View showingthe seam made by this stitch forming mechanisin.

(fle/neral structure.

The intention consists generally in a sewing machine having a supportingstandard which carries an overhanglng arm in which reciprocates then'eedle bar carrying the nee The operating shaft for the machine islocated in the standard. Also mounted in the standard and extendingoutwardly and upwardly therefrom is a supportinv arm and this supportingarm at its tree enA carries a horizontal arm which is parallel with theoverhanging arm of the machine and it is also raised above the plan ofthe base of the machine. so that an operator may readily reach beneathsaid horizontal arm. The horizontal arm at its free end carries adepending arm and this depending arm at its lower end carries the worksnpporting arm proper of the machine which is [u'eierably cylindrical incross section. This work supporting arm projects toward the over-hangingarm and the free end thereof is substantially beneath the free end ofthe overhanging arm, so that the looper mechanism which cooperates withthe needles may be located in this arm. The horizontal 'arm carries arotating shaft which is operated from the main shaft in the standard andthe loopers are operated from the rotatingshattin the horizontal arm.Also located in the Work supporting arm is a differential feedingmechanism which is operated by suitable mechanism from the rotatingshaft in the horizontal arm. A trimmer is carried by the overhanging armand operates to prepare the fabric edges for the stitching mechanism.The fabric has its edges brought together on the upper side of the worksupporting arm and the feeding mechanism operates to feed the joinededges off from the arm. The said edges are fed tothe trimming mechanismWhere they are trimmed and.; hey arar then brought into abutted relatielftoneac` f other and joined by the stitehin /mecha ism.;

The stitching mechanism consistsfof two pairsol" spaced needles, onepair being in rear of the other. 'There is a looper for each pair ofneedles Within the work supporting arm and thread laying devices foreach pair of needles carried by the overhanging arm, soy that the`stitching mechanism forms in effect two independent lines of needleloops which are connected above (iis and below the fabric, and thesepairso 1 I needlesfare so arranged that the connectin threads 'of theneedle loops of one pair o needlesjoverlies in part or in whole theconnecting threads of the needle loops o 'f the other set of needles.

Work supporting mechanism.

lReferring more in detail to the drawings, my improved-sewing machineconsists of a standardl, which is carried by a supportingl base 2. 0nthis standard is mounted an overhanging arm 3. Within the standard i1 isthe main .operating shaft 4, which is drawings, the arm 6, projectsoutwardly in a plane substantially at right angles to a plane containingthe overhanging arm 3. The horizontal arni'7 at its free end carries adepending arm 8, the dependin arm at its lower end carrying the cylinrical work supporting` arm 9. This cylindrical work supporting armi)projects forwardly from` the depending arm 8 to a point substantially.

underneath the free end of theoverhanging arm 3. i v

My machine is especially adapted fol' stitching.;r the edges of fabricto form tubular articles. Ii'he fabric having, the edges to be Ijoinedis placedunderneath the cylindrical work supporting arm 9and the edgesnare brought up around each side of the armt until they meet at the upperside of said arm. The horizontal arm 7 is located some dis tance abovethe base 2` or the table on which.

`said base rests, and this alfords a space for the arm ofthe operator sothat' the fabric I l' may he readily placed around the cylindrical worksupporting arm 9 and properly guided to the stitch forming mechanism.-

Stitchr forming mechanism.

At the forward Vend of 4the overhangin'g nrm 3 is a supporting head 10in which vreciprocates a needle har 11 carrying, as here- .in shown,four needles. The needles 12 and E13 form one pair of needles, whilethee needles 14 and l5 -iorm another pair. The needle har llisreciprocated by a needle lever lf3 which is pivoted at 17 to theoverhanging: arm and is oscillated by a link 1S coiperating with aneccentric on the main shaft 4. The needle lever at its outer end isconnected hy a link 19 with the needle .har l1.

shaft 23 is mounted to oscillate in suitable bearings 24 and 25 locatedwithin the Work supporting arm. The lopper carrying head 22, as clearlyshown in Hg. 23, has a projecting stud 26, on which is clamped anauxiliary-looper carrier 27. The looper 2l is mounted in a suitablesocket 28 inthe carrier 2l'. While the looper 20 is mounted in asuitable socket 29 in the looper carrier- 22, and is locked in positionby a set screw 20 which extends throughthe stud'26. The looper carrier22 is cut away, as at 30 to form a clearance space for the needles.'llhis construction permits either looper to be removed withoutaffecting the other looper, and also permits of the looper being successively adjusted relative to the respective pairs of needles. The carrier2? can be moved about and along the stud 26.

As above noted there is a separate loo er which cooperates with eachpair. of need es, und, therefore, the needle loops oi` one pairof'needles will he joined beneath the material by a looper thread whichserves not only to lock the needle loops but also to connect the needleloops across the Vmeeting edges of the sections of fabric to be joined,as will be hereinafter more fully disclosed.

The looper shaft 23 extends lengthwise of the work supporting;r arm to apoint within the lower end of the depending arm 8. shaft 31 is mountedto rotate in suitable hearings in the horizontal arm 7. This shaft isconnected by two operatincr links 32 and 33 with the main shaft 4. 6usaid main shaft fl! are two staggered cranks` while the shaft 31` alsohas two staggered cranks. and, therefore, these links will oper ate toimpart a positive rotation to the shaft 3l from the shaft 4. 0n theouter end of the shaft 3l is a. crank piu 34 to which is connected alink 35. This link 35 atY its loivcr end is pivoted to a crank arm 36rigid with the end of the looper shaft 23. The said link 35 is pivotedto a rod 37 at 38 and this rod 37 slides in a 'sleeve 39 which sleeve ismounted Aon an oscillating support 40. The axis of the oscillatingsupport 40 is at right angles to the plane of movement 'of the rod 37.As the link 35 moves u and down, this rod becomes a movable fullnnm forthe link 35 and in effect converts the link into a lever fulcrumedbetween its ends, so that the 'link 35 imparts not only an oscillatina`movement to the looper supporting.,r shaft V23, hht also ah endwisemovement thereto. The loopers are Aby this mechanism moved Yinto theirneedle loops, then given a sidewise orV lateral `needle avoidingvmovement, after which they are retracted to shed their needle loops andthen again moved laterally for entry of the'next needle loops. Thislooper mechanism per Re forms no part of the invention and furtherdescription thereof is not thought necessary.

f pair ot' needles is l forward. as shown in Fi .it the lower end of theneedle bar 11 is a needle clump For supporting and positioning theneedles. Said needle clamp consists oi' e needle head +11, which is clamed to the lower end oi' the needle bar 11. TPhe needle 1; is mounted insaid needle head and held therein b v a set screw 42, see igs. 24 to 29.The needle 13 is located 1n tlie lower end of the needle bar and is heldtherein by a set sez-ew 43. The needle 13 has its point raised above thepoint of the needle 12, as in the well known manner where the needlesare n idely spaced and a single looper co erates with both needles. Theneedle 14 of t e rear mounted in the needle head il and is held thereinby a, set Screw 1+i. Directly above the needle head 41 is a collar 45which. is also secured to the needle har and this collar serves as astop for vertically positioning the needle 14. The needle l is alsocarried b f the needle head 41and a set screw 46 holds the same inplace. A projecting lug 47 on the collar 45 determines the lverticalposition of this needle 15. Said needle is set With its point somenhatabove the needle 14, for reasons above stated.

` .Xs clearly shown in Figs. 17 to 19, inclu` sive, each pair of needleshas separate thread laying devices co erating with the same :dime thefabric. lJn Fig. 17, the fabric is indicated at F. The meeting edges ofthe two sections of f-.lbric to be joined are indinrell et f. A threado, is uided by a thread guiding linger 48 and t e thread is laid hoekend forth so as to be stitched'to the fabric by the needle threadscarried by the respective needles 12 and 13. A second thread L iscarried by a thread uidin finlii and this thread is laid baer and orthon die opper 'face of the fabric and joined limoni 'oy the threads ofthe respective needles il and 15. The thread fingers 48 and 49 ien emovement in a direction substantially parallel with the line of `feed.Coperatin with the thread finger 48 is a thread hoog Jil, while a threadhook 51 cooperates with 1h." thread finger 4l). The thread lingers 48:and Alll ire brought to the position shown in Fig. 17. and then thethread hooks move 18, engaging the ilu-ends o and respectively, andforming loops, as shown in Fig. 19, 'between the .sir/[nds oi' which therespective needles 12 and 1l pass, the threads of course passing mehrille raised needles 13 and 15.

'linee thread hooks 50 and 51. are carried an :we 52. Said hooks areadjustabl ii ...il to the arm for lateral and vertical a ilrwmonls. undsaid arm is pivoted at 53 berri-wn suitable spaced supporting lugsproieving Yfrom a bracket 54 which is attached lo the supporting headyon the overhanging arm. The pivotal point 53 is considerably lo wwofthe needle bar. The thread hooks:

are lixed to the arm 52 and are so positioned that, when the arm swingsabout the pivotal point 53 the hook 50 Will pass in front of the needles12 and 13, While the hook 51 passes between the pairs of needies-thatis, in rear of the needles 12 and 13 and in front of the needles 14 and15. The erm 52, as herein shown, is integral with an arm *55. At therear of the mahine, as clearly shown in Fig. 2, there isa rock shaft '56which bearings 57 and 58. This shaft 56 is oscillated by a link 59 whichcoperates with an eccentric on the main shaft 14., see Fi 4. Looselymounted on the shaft 56, but eld from endwise movement thereon, is asleeve 60. This sleeve carries a downwardly projecting arm 61, end to alink 62, see Fig. 13, and this link 62 is in turn pivoted. to an arm 63teleseo ing Within the arm and clamped therein by a screw 64. Alsomounted on the shaft 56 is a second sleeve 65, which is likewise looseon the shaft, but held from endwise movement thereon. 4In other words,the shaft 56 is merely a bearing support for the sleeves and 65 and themovement of the shaft 66 is in no wise imparted to these sleeves. Thesleeve has a forwardly projecting arm 67 see Fig. 1. This arm at itsouter end is pivoted to a link 68, which in turn is pivoted to a rhallstud fixed at 69 to the needle lever 16. This ball stud is on the rearface of the needle lever and the overhanging arm is provided with arecess 70 to permit free oscillation of the needle lever. As the needlelever oscillates, the sleeve 65 will be oscillated on the supportingshaft 56 therefor. The sleeve 65 has a second arm 71, which `projectsdownwardly therefrom, while the sleeve il() likewise has a downwardlyprojecting arm 72. The arm 71 carries a spring-pressed plunger' Til, seeFigs. 15 and 16. This plunger is formed with a hand-piece 74 and aspring 7 5 is housed in the arm 71 which normally forces the )inngertoward the arm 72. The arm 2 is formed with a tapered recess 73" toreceive the tapered end of the plunger, thus providing means for takingup any Wear and there by prevent any loose movement. Said arm is alsovformed with laterally projecting spacedribs Til-76. The purpose of thisdetachable connection between the arms 71 and 72 is to permitthe sleeve60 to he disconnected from its oscillating n1echanism,'sp that thethread hooks oscillated b this sleeve may be moved 1' a limited d1stanceaway from the needles.; IThis is for the purpose of giving access to theiff-elles for threading or renewing. lf the machine should be startedwith these parte disconnected, the arm 1 will he rocked and the springplungetV vill be forced into the socket or opening in the arm 72 as soonas it cornes is mounted to oscillate in.

which is pivoted at its lower i into register with the plunger and,therefore, the partsl will be automatically connected on the starting ofthe machine.

The thread fingers-mand 49 are carried at the lower end of a lever T6'and are held in place by suitable clamping means, The lever 76 ispivoted to "a bracket arm 7T at its lower end and this bracket arm TTmay be formed as a part of the bracket 54 which Supports the threadhooks. Said lever 76 is connected to a link 78 and this link 78 is inturn connected to a downwardly projecting arm 79 see F ig. 3, mountedonthe cross shaft 56. -As the cross shaft 56 oscillates the arm 79 willbe'moved back and forth and this will swing the lever TG in a planesubstantially parallel with the line of feed. The thread fingers.therefore, move ina.' direction substantially at right angles tothedirection of movement of the thread hooks` andsthis enables the threadscarried by the iruiding fingers to be properly positioned for the threadhooks and also to coperate with the thread vhooks in properly laying theVcross threads relative to the needles. The threads for the .needles areled from the supply through suitable tensions T mounted on a bracket.8() and thence through guides to the needles. The threads are not shownin the drawings. The tensions may be released by a suitable releasingarm 81. which is operated `from the presser foot lift ing mechanism.

In Figs. 33 to 38 inclusive I have shown a modified form of stitchforming mechanism. 'In this form of the invention the needles l2 a d' 13forming the front pair of needles are'widely spaced while the needles14a and 15 which form the rear pair oh needles are comparatively closelyspaced.

"Fach ,of the rear pair of needles is set in a linev which is parallelof the line of feed and passes between the front pair of needles.

while a looper 21 coipe'rates with the rearY Coperating with the needles12 and 13 beneath the Work support is a` looper 20 pair of needles i4andpl.

The needles i4 and .15 being very closely spaced are also provided witha loop. r'etaiiier 2l". This loop retainer has a projecting' finger 9iwhich is adapted to cooperate with the loiper 2l and hold the needleloops formediiu the threads of the needles 14a and l5 spaced as shown inFig. 514. which permits the needle l5 to pass between the. needle loops.This loop retainer is of the well known construction and furtherdescription thereof is not thought necessary. 'Said loop retainer ismounted inthe bearinglsupport on the front end of the vork supportingarm 9.

The loopers 20 and 2l are mounted in the same manner as above describedin cony Iiertion with Figs. and 23.

' presser bar.

Trimming mechanism.

The sections of fabrieF, as clearly shown in Fig. 17, when .'oinedhave-their edges abutted, so as to ma e a flat seam. In order to prepare,the edges, so that they may be abutted, I have provided a trimming meehanism which consists of a stationary trim ming blade 82 and anoscillatingtrlmming blade 83. The oscillating trimming blade is clampedto an arm 84. Thisrarm 84 is in turn clamped to an extended bearing 85on the lower end ofthe yoke 86, see! Fig.

32. This yoke 86, is mounted on the presser bar so as to oscillate aboutthe axis of the Said yoke has two spaced bearings through which thepresser b'ar passes and one, of the arms is connected to this extendedbearing 85. A spring 87 surrounds the presser bar and forces the yokedownward along; said presser bar so as to hold the movable trimmer bladein `shearing Contact with the stationary trimming blade 82. Said movableblade has a projecting part at the rear side thereof which continuouslyoverlaps the stationary blade. The yoke SG has a forwardly rojeeting armS8 which carries a hull stud) which is pivotallyy connected to av link89, see Fig. 4. This link 89 is pivoted at 90 to a rocklever 91 which ismounted on 'a suitable bracket 92 carried by the standard. The other armot' the roek leverV is pivoted to alink 93 which in turn is pivoted toa'ball stud 94 carried by the needle lever. As the needle lever isostiilated the link 89 will impart oscillations to the yoke S6 and thiswill in turn oscillate they movable ltrimming blade..

The" movable ,trimming blade 82 is carried .by the presser' foot and.tiierel'ore. both y trimmed said edges are abutted and directed to thestitching mechanism. The trimmed ofi' strip is guided away from thestitching mechanism b v a strip delieetor. This strip deflector isprovided with a fixed section 9G which is secured to the presser tootand spans the slot through which the edges of the fabric are guided. Asection 9T is carried by a movable arm 98 which is pivoted to a lng 99on the presser foot. A spring 10U carried by the arm 98 bears against nsquare shoulder on this lug 99 and serves to hold this movable sectionof the strip delieetor in the full iine position shown in Fig. 30 or indotted line position shown in Fig. 13. The purpose of this movablesection of the strip defieoini is to give access to the needles forthreading or renewing.

Presser foot mechanism.

The presser toot 101 is carried by the presser har 109. on which the`yoke S6, above described. is mounted. This presser han' is mounted toslide in the snpiiorting head of the overlianging anni and may he raisedeither h5 the hand lever or by '.1 lever 101 which is connected to nsuitable trendle. This presser foot hns two needle openings 105 and 106.The needle opening 105 is for the needles 11 und 15. while the needleopening 10G is for the needles 1.3 and 15S. 'l were is n stitch tongue10T Carried h v the presser foot und projecting into enel; needle opening. This stitch tongue extends between the needles und the thi-ends aand 5 :ire luid across the respectivo stitch tongues :1 nd slide olffrom the saune in n. well known way.'

The stationary trimmer 8:2 is mounted in ri groove in the presser lootund is Clznnped therein by suitable mechanism. The presser font isFormed in two tions. n fixed sew tien 111% .fin-l :i yield' C sectionlilik see 151g. Ill), This yielding sei-lion moves bodily 11p-:ind downit one sidix oi' the lifted sev tion und :i sililnhle sp1-ing 11()noi-madly holds said yielding section on the fzilnie. There :i spnc'ebetween the sections 10H :1nd lili! est the torwznd end whirl: providesn gniding l'lninnel 111 for the nptnrned edges of the hdn'io seeiionswhirl] :ire to he irinnned. The lined section 9U o1' ille stripdefini-tor is secured to the lixnd svetion nl' the presser tool :indmerely reels against nn np turned lug 11:50u the .Inomhli- .wl ion ol'the presser ioni. This fixed section o1' the strip 11911111.1111' is nlmspnllll sllg'llllj' :lleno Lin' nnnnlile sei'tion ol' the presi-v1 font.so that' mid lnovrdilo .sefiion muy Vivid in :in upward direetion. Thepurpose ot this niovnllle see-- lion of the presser Forli is to permit:en edge having n i-ross sonni. or ni' more than one ihielness. to in;properly held while il is lieing stitfhed to :in edge oi n :singlethic'kness ;..l.s-ing beneath the presser foot.

Tfr/ont More.

Dil-eel l v beneath the presser foot und enrried h v the work'sinipoiting erin 9 is a throat plate 113. This thi-ont plate is securedto the work supporting arm hy suitable screws 114. Seid throat plate isprovided with feed slots 115 and with openings for the needles. Theopenings 117 are for' the needles 12 and 13 and the o )enings 116 arefor the needles 14 and 15. v etween the needle o enings for each set ofneedles there tongue 118. The needle o )enings of the need e openings11.7 so that there is a solid portion of hroet plate which supports therear stitch tongue 118.'

he louper threads which join the needle loops beneath the work supportare laid across the respective stitch tongues und are fed oil' the endsof the sinne. lt will he noted that these openings for the needles inthe throat plate and also the openings in the presser 'foot are:1i-ranged so that the pairs of needles at the rear are slightly offsetrelais live to the pair of needles in front. the pening 116 for needle11 being disposed in a plane extending between the openings 11 T. Thisresults in the formation of the seam shown in Fig. 17. The front needlesforni what might he Called :i separate and inde pendent seam from thatformed by the reni' needles. The needle 13 enters the sections oftabl-ie eloser to the meeting edges f than the needle 12, and likewisethe needle 14; enters on the other side of the meeting edgessubstantially' the same distance from the meeting edges ns the needle13, While the needle is on the other side and substantially the sumedistance from the meeting edges :is the needle 12. l

.is shove noted. the pairs ot' needles are positioned one in reni* ofthe other. and there nre independent oo el'ating elements 'for eneh pnroi needles. he stitches formed h v the needles 14 und 15 overlap thestitches formed hy the needles 12 und r he notering and joiningstitches, therefore. have nnvhoring loops located :it some distnnf-ehawk from the meeting edges and @ov-- ez-ing flu-ends which cross themeeting edges :ind extend lengthwise of the meeting edges :it pointsndjzwent sind meetiner edges.

ln Fig. 35 of the drawing have shown n tln'ont plate 113" which is ada)ted for the .stitching ineehanism shown in ILigs. 33. and IH. Suidthront plate is also provided with nn opening 116n for the needles 12:ind 13a sind a, stiff-h tongue 1155a carried by the throat pleteprojects between the needles into these openings. Seid throat plete has:In opening 14g for the needles 14 :md L13n and n stitch tongue 118*lcarried by the throat plete projects into this needle opening. This rearstitch tongue may be omitted if desired.

Feeding mechanism.

The fabric sections to he joined are fed to the stitching mechanism by afeeding meehanism which consists of a main feed dog d an auxiliary feeddo `120. The main feed dog is carried by a eed bar 1215 screw 123. Themain feed bar 121 is located in the work supportingarm V9 and extendssubstantially from end to end thereof. Said feed bar betweenv its endsis pivoted to a forked arm 124. Said arm is mounted on a Sleeve 126having an eccentrically positioned opening therethrough which receives.the bearing pin 128. Said pin is locked to the work supporting arm by ascrew 129. `By loosening this screw and turning the pin by a. tool inthe slot 130, the sleeve which is keyed to the pin can he rotated andthus the feed bar raised or lowered. The rear end of the main feed bar121 is in the form of a yoke having two arms 131 and 132, see Fig. 21.These arms straddle4 the louper shaft 23, which also passes through theforked arm 124. The .arms 131 and 132 are pivoted to 'a lever 133.' Thislever engages an eccentric 134 at its up er end and the eccentric 134 iscarried liy the rotating shaft 31 in the horizontal arm. This eccentriccarries the crank pin 34 of the loo er operating mechanism. The lever133 is ulcivumed on a pin 135'. -This pin is carried by a second lever13G which is -fulcrumcd on a vertically adjustable pin 137 carried bythe depending arm 8. The upper end of the lever 136 has a forkedengagernen*t jith a block 13S. which in tum coperates with an eccentric139. fixed on shaft 31, see Fi". 10. The pin 137 extends into a fnlcruniblock 140 which is adapted to have slidirig engagement in a slot in thelcver'-136. .\s.the

shaft 31 rotates the eccentric 134 will bodily ed to the feed bar is.therefore. au up and down movement and a longitudinal niovenient. lnother words. the main feed dog will be raised into engagement with thefabric` will inove 'forward to leed thc fabric, will then drop l'roni4engage'mcnt with the fabric and be retracted for thc next feedingmovement. l

The ba r 122 which carries the auxiliary feed dog 12|) is slidabl'vmounted in .a groove or recess 142 in the main feed bar 121. The up anddown movements, therefore. of the main feed bar willbe imparted to thisauxiliary feed Tau'. Said auxili'arv feed bar may be given adifferential feeding movement relative to the main feed bar `through thefollowing mechanism. A link 143 is pivoted at 144 to the auxiliary feedbar 122, see Fig. 5. The other end of this link is pivotedat 145 to arock arm 146, which inturn is mounted at 147 in bearings carried b thework supportin farm 9. A link 148 is pivoted at 149 to a ug 150, carriedby the main feed bar 121, and the other und of this link 148 is pivotedat 151 to a block which slides in a se mental groove 152 in the' rockarm 146. y y shifting the link 148. so as to vary the pivotal connectionof the link with the rock arm, the oscilla tion of therock arm, due tothe bodily movement of the link 14S, travelinvI with the main feed bar,may be varied. The oscillations of the rock arm`146 are imparted`throuvh the link 143 tothe auxiliary feed bar. T e link 148 is shifted ba hand lever 153 which is connected by a hnk 154 to said link 148. Thishand lever is fulerumed on the work supporting arm and at its rear endis connected to a stud 155 which projects through a slot 156 in the armof the machine. On the outer faceof the work arm there is a serratedplate 157 which is secured to the arm by suitable screws 158. The stud155 carries a hand 'piece 159 which is pressed by a spring 160 intocontact with the serrated plate 157 and the serrations serve to lock thestud in an adjusted position. The hand piece, however, may be moved outof engagement with the serrated plate and the lever shifted in order tovary the position of the link 148 and thus vary the stroke of theauxiliary feed dog.

It will be understood thatI there are snitable removable cover platesfor various portions of the arms which contain the mechanisms foroperating the loopcr and the feed, but these cover plates have not beendei.scribed in detail. lt will also be understood that there aresuitable thread controlling devices for the looper threads which areindicated generally at L and L' see Fig. l. There is also a thread clampfor the looper thread indicated at (l. this figure.

ln Fig. 3R of the drawingl l have shown two sections of fabric indicatedat F which are joined by in v improved scam made on the stitch formingmechanism .shown in Figs. 33 toB inclusive. The front pair of needlesare indicated in 'this ligure at 12 and 13a whih` the rear pair ofneedles are indicated at 14 and 15, The cross thread n is laid back andforth about the needles i12 and 13`vihile the cross thread 7; is laidback and forth about the needles 14u and 15.

(ll/million.

ln the operation of my machine. the fabric sections to be joined areguided underneath the horizontal arm T; the o icvator reaching beneaththe arm guides tlic sections of the article about the work supportinf.rarm 9. so that the edges to be joinedwill be directed into the receivingchannel ol" the presser foot. The feeding mecha- ,.lisn) opt-initieelupon these Sections und prei: ne the nnfirst to the trimming mechanizen,ivhere the, "e1-tieni edges are trimmed, and thenre to the stitchingmechanism Where :seid edges are nl ntte lfind joined by the stitrhinfgthreads. The auxiliary feed den' is preferuhlj; so 'clnlirolled :is tooperate upon the .nniterinl ut a. slightly greater 'perfl than the 11minleed. dog `which gnthers in the materiel enllicientlyv to prevent jetohing the genie when operating upon istie or knit material. The edgesafter they me trimmed are first joined by the needle threee ot'llnneedles l2 and 13, ioALether with the renner-ting' threads. whirl),i' srrilied idiom, mooiste of the looper thread helma' and the L''osethread above. lter the edges have been joined, thgLu are Uien,pz'eeenied to the seeond pair oi' needles wLuge the lil-:lees are againjoined by the needle ihre-nde together with the connecting louperthree-il :and Moss thread und this mir of rxr-edles is so positionedthat the resulting' linee` of etitfjiing overlap, that is, the (wiethread and ,louper thread of the mir nlI air-edlen.. overlie in part orl timeoverlap the looper thread 1 ein :hrend of the Afront pair ofneedles on' hereliy forms .-i Ver); strong and dnrn- Het -iezin'i whirheonneets and covers the e il the motorini.

:hfl* l1 in the horizontal member is ,irm'hled with e mind wheel 161.which lirwilitiites the tartine of the machine hv 'he operator who site.in front of the hori- :aoniol firm. Vhen this hand wheel 161 is tnrnedit not only rotates the shaft 31, but through the connecting links 32and 33 will rotate the mein shaft and start the Sellin'. 'k

lt is: olnious that minor elmnges in the ii-mile of rontrnetion andarrangement of wmf. 'f mrtienhtrljv the position of the needless. onlybe lne-le without departing' trom the spirit of the invention :is setforth in the appended rlaiins.

lfeviog thus ries-vrille] what l rlniin :in new :im desire to Serure hvLetters Potent. is:

l. The;eoi'nhinntion oi :L standard, :in overlnunjiiig: :lrin rorriedthereby, a. needle lor rerlgirorziting in seid, overlnmging arm, und ,lneedle married by ,said needle bar, an i'nitwardly and upwardly mm themandami. :l depending arm supvoted in' seid hist named .'o'in, und awork eiiiporring zii-n1 rariied it the lower end nl' :miel depending ermund having its free rnd @tending underneath the free end'of seidoverh'nffing drm. l The, Forniinolion of a standard, an overlienging armrerried thereby. o needle *our reeiinoceting in saidoverhe-nging arm,

my invention,

Lesesaal and a needle earried by seid needle her. :in arm projectingoutwardly end nimma-diy from the standard, a depending erm sul ported bySuid last lnnned arm. :l work sogportinff arm carried at the lower endof said depending arm and having' its free end e.\- tending underneaththe free end ot' mio', overhanging arm, a looper mounted in the free endof s-,Lid work supporting; erin, and means extending through said :nine`pio jerting from the standard for operating said looper.

3. The Combination ol :i Standard, :in overhanging armnrried therein'. ineedle hun' reoiproonting` in Suid overltengingf erin, and a needlecarried by said needle imi', :in arm projectingr outwardly andnpivzniliif from the Standard, :i depending erin mijn ported by :saidlast named erin. n work my portingr arm carried at the lower end oi saiddepending erin and haring its free end attendingr underneath the freeend of said overhang-ing arm, a lei-iper mounted in the free end of saidWork supporting erin, menne enrolling through said :mns projecting fromthe standard for operating' Said looper, a feed dog carried hy' saidwork supportingr erin and disposed so ne to fer-l the Work oil" from theend of the arm, and means extending through said urinei .Sno ported bythe standard for operating said feed dog.

l. The combination of :i standard. on overhnnging arm carried ,by said:Standard a needle bar reciprocating in seid overhang" ing,r arm, and arneedle carried by seid needle, har. on arm carried by the standard sindpro jerting outwardly and upwardly therefrom, :L horizontal arm.parallel with the oven hanging erm and carried by seid erin pro-- jectinfrom the standard, nv depending non carrie ,by said horizontal erin :itthe free end thereof, and a Work supporting erin c'arried attl1e lowerend of seid de'ieniling; erm :ind'hnving its free end extending' underneath the free end oi the merlninging arm.

The `combination of fi overhonging arm carried by a needle barreciprocating in Sai-.l overhang. ing arm, and a needle carried by Saidneedle bei'. an arm carried by the .standard and projecting' outwardlyand upwardly there from, a horizontal arm parallel wit-i1 theoverlmnging arm end carried by mid anni projerting from the standard, adepending arm carried by Said horizontal iirni at the free end thereof.a work snl'iporting erm Carried at the lower end of said depending' armand having its free end extending nnderneath the free end of the,overhanging arm, nlooper mounted Within the free end of said WorkSupportingfafm sind, egpey-ai-,- ing with said needle, and meansextenofng liti through said arms supported by the standard for operatingsaid looper.

(i. The combination of' a standard, a overhanging arm carried by saidstandard, a needle bar reciprocating in said overhan ing arm, and aneedle carried by said need e bar. an arm carried by the standard andprojecting outwardly and 4upwardly therefrom. a horizontal arm parallelWith the overhanging arm and carried by Said arm projecting from thestandard, a depending arm carried by said horizontal arm at the free endthereof, a work supporting arm carried at the lower end of saiddepending arm and having its free end extending underneath the free endof 'the 'overhangin arrn` a looper mounted within the free en ofsaidwork supporting arm and coperat-A ing with said needle, means extendingthrough said arms supported by the standard for operating said looper, afeed dog at tlie free end of said Work supporting arm arranged forfeeding the-material o from the arm. and means extending through saidarms supported by the standard for operating'said feed dog.

7. The combination with 'a standard, an overhanging arm carriedthereby,xa needle bar reciprocating in said overhanging arm, a needlemounted on said needle bar. an

arm carried by said standard and projecting outwardly and upwardlytherefrom, a horizontal arm carried at the outer :free end of saidprojecting arm, a. main shaft inv said standard, la shaft in saidhorizontal arm, and means for. positively rotating the shaft in thehorizontal arm from theshaft in the standard, an arm depending from theouter end of the horizontal arm, a work supporting arm carried at thelower end of said depending 'arm and having its free end extendingunderneath the free enrd of the overhanging arm, complementa] stitchforming mechanism located within said work supporting arm, and means foroperating the same from said rotating shaft in the horizontal arm.

8. The combination with a standard, an overhanging arm carried thereby,a needle bar reciprocatingv in saidoverhanging arm,

a needle mounted on said needle bar, an arm carried by said'sta-ndardand projecting outwardly and'upwardly therefrom, a horizontal armcarried at the outer free end of said projecting arm, a main shaft insaid standard,` a shaft in said horizontal arm,

and means for positively rotating the shaft A in the horizontal arm fromthe shaftin the standard, an arm de ending from the outer end of thehorizonte arm; a work supporting arm carried at the. lower end of saiddepending arm and having vitsfreo end extendpg underneath the free end.of the over-`V hangmg arm, complementari stitch forming rfor operatingsaid main feedi mechanism located within said work snpporting arm, meansfor; operating the same p from said rotating shaft in the horizontalarm. a feed dog at the Afree end of said work supporting arm, and meansfor. operating said feedV doo from said rotating shaft in' the horizontearm.

supportingarm carried at the lower end of said depending arm and havingits free end extending underneath the free end of the orerhanging arm,complemental stitch forming mechanism located within said worksupporting arm, means for operating the saine from said rotating shaftin the horizontal arm, a mai-n feed dog at the free end of said worksupporting arm,

means for operating said main feed dog from said' rotating shaft, anauxiliary feed dog at the free end of said work supporting arm, andmeansV forgiving said auxiliary feed dog a differential feedingVmovement. y Y

lll. The combination with a standard, an overhanging arm carriedthereby, a needle barl reciprocating in said overhanging arm, needlesmounted on said needle bar, an arm carried by said standard andprojecting outwardly and upwardly therefrom, a horizontal arm carried atthe outer free end' of said projecting arm, a main shaft'in saidstandard, a shaft in said horizontal arm and means for positivelyrotating the shaft in the horizontal. arm from the shaft in thestandard, an arm depending from the outer end of the horizontal arm, awork supporting arm carriedat the lower end of said depending ann andharing` its free end extending underneath the end of the overhangingar'm, complemental stitch forming mechanism located within said worksupporting arm, means foiroperating the same from said rotating shaft inthe horizontal arm,a main feed dog'at the free end of said worksupportin arm, means rotating: shaft, an auxiliary feed dog at thefreeend of said? worksap'porting arm,l and means. for giving said auxiliarjrined dog a differential feeding movexnen moans for operating. theauikilaiiliyl y adjustabe at the vrill-n :t

u hereby the dflereutird throrv oi seid iced log muy be Varie-(L ll` Theconililnution with u standard, un overhnngnnf umn carried thereby, 'f1needle bnr reeiproouting in said overhanging erin, tuo gni" i' sparedneedles enrried by said neellie nurA one mir being arranged in rear ofthe otherz n work supporting arm extend ing in u .lirection at rightangles to the pinne of the overhnnging arm and having its free endunderneath the free end of the ovcrhanging erm, means for suspendingrseid work supporting.: erm, whereby there is u free space underneath andet the sides ol' the sume from end to end thereof, a looper shaftextending longitudinally oi' seid Work supporting; arm,.two loopers onsmid shaft, one for each pair of needles` und means operating throughsaid suspendingA means for oseilleting seid looper shaft.

l2. The rombinstion with e standard. en orerl'mnging ar'rn carriedthereby, a needle bar wriproeating in seid over-hanging :um` two pairsof spared needles carried by said needle bar, one 'pair being*arrsngedin rear of the other, u work supporting, arm extending in frdirection et right angles to the pinne of the overhunging erm and.havingr its free end underneath the free end of the overlnlnfing erm,means for suspending said work supporting arm, whereby there is u freespace underneath and at the sides oi' the same from end to end thereof,a louper shaft extending longitudinally of said Work supporting arm, twoloopers on said shaft, one for each pair of needles,

means operating through said suspending means for oscillating saidlooper shaft. a renin feeddm'gs :1 feed bnr located Within said nor-ksupporting arm, and supporting suii eed dog. und means operating throughsaid suspending means for actuating the feed lmr. t l

13. The Combination with au standard, on overwinning arm carriedthereby, aneedle bur m-iprocetingf in said overhang'ing arm. two noirsof spared needles carried by said neednbn 1; one pair being,lr arrngedin rem'V oi' thv other. n work supporting,` :irmextending in Lllirectigm at right angles to the plone oi' the o\i;=.h:1nging arm andhaving its irl-s curl nnderneuth the free end of the overlmnging erm.means for suspending said work .sufnlortng arm, whereby there is a freeeprice underneath and at the sides nl the saune from end. to endthereof. aA louper shaft esending' longitudinally of4 said worksupporting arm, twos looperson sind `@hehe one 'for each pair ofneedles, ineens operuting through said suspending means for oscleiingsfnelooper shaft, a

moin food flog; s feed berloeatefi within said work supporting erm,L andsupporting seid ire-.l dog. means opersing through solo' suspendingineens forL actuating the feed hun un, auxiliary feed dog :et the freeend oi suiel work supporting arm, und ineens i'or ji\in said auxiliair);feed dog a differential movement from the feed bur of the umili iceddog.

ll. The combination ol' :i standard. :1n owrbanginif :nin lurried ilysmid stundard, n needle brr reciprocating in. the outer end of said Worksupporting urn). two pairs of spaced needles, one pair being arranged inrear of the other and curried by said needle ber, u work supporting erinioeeted in e line et right angles to the plane of the overhunging arm.means for suspending seid Work supporting urln, whereby there is a Atreespare underneath the sides thereof from 'end to end of said worksupportino arm,

complemented stitch forming: mec lanism located Within said worksupporting erm. feeding mechanism carried by seid Worl supporting arm,trimming 'rneohanisnl located in front of said needles and includingr:i` movelfle trimmingv elude operating in a horizontal plane forprepari-ing the edges of the 'fabric lo be stitched by the needles.

15. The combination of e standard. en overhanging erm eerried by seidstandard, n needle bar reciprocating in the outer end of said work.supporting erm, tiro pairs of spaced needles, one pair being; arranged.'in rear of the other and carried by said needle ber, e work supportingarm loented in a line at right angles to the. plane of the over hangingarm, means for suspending seid work supporting arm, whereby there is "afree spese underneath the side thereof from end to end of said worksupporting arm, coznplementsl stiteh forming mechanism located Withinsaid Work supporting arm, feeding mechanism carried by said worksuppm'ting erm, trimming mechanism lo cated in front of said needles andincludingV1 e movable trimming blade operating in a horizontal plane forpreparing the edges of the fabric to be stitched by the needlese presserfoot, and a deflector carried by the presser foot for guiding' thetrimmed oil' Strip away from the needles.

1G. A sewing machine, including in combination, two pairs of gspneedneedles, a` threaded looper for each pair of needles, one pair ofneedles being arranged in rearl of the other pair, the needles of onepnlbeingF 'offset relative to the needles of the other pei' and threadlaying devices for each pairof needles, said pairs of needles beingsofdisposed that the loops inthe looper t eed of the looper cooperatingwith Athe rear;I pair of needles overlie the' loops formedin the looperthreeii by the looper eogerefing with front panol needles.

s sewing machine including in coin-` binntion, wo miss of' spacedneedles, :t Looper 1for envi pair of needles. one puir of needles beingarranged in rear of he other.

the needles of one pair being offset relative

